Collision with Tile-Based Movement

[hnabi94]

I wanted to create tile-based movement, and I've accomplished that quite easily using tweens using the player x/y values. This works great, but the problem is that collision is not working, since collision happens off of velocity and I am just using the x/y values to move the player.

 

So, my question is how can I get collision to work? Is there some approach I can take keeping my movement system, or will I have to recreate the movement to use velocity. I'd really like to keep the tween movement since it is so simple.

Thanks, hnabi94.